(Mostly pre-existing) This is no longer brief.  Can you think of a *brief* description of what this function does ?
You can follow up with more detail in subsequent paragraphs; not every line of a doxy-comment has to start with an @directive !  e.g.
/**
 * @ brief Only a few words long.
 *
 * All the waffly explaniny timey-wimey stuff you could feel the urge to write.
 *
 * @return Best if this is fairly terse, too.
 */